Desk-telephone.



E. R. GORWIN & G. A. BALS.

DESK TELEPHONE.

APPLICATION FILED DEG. 26.1908.

941,762. Patented Nov. 30, 1909.

ELMER R. CORWIN AND CHARLES A. BALS OF CHICAGO, ILLINOIS, ASSIGNORS TO COR- WIN TELEPHONE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

DESK-TELEPHONE.

Specification of Letters Patent.

Patented Nov. 30, 1909.

Application filed December 26, 1908. Serial No. 469,205.

To all whom it may concern:

Be it known that we, ELMER R. CORWIN and CHARLES A. BALS, both citizens of the United States of America, and residents of Chicago, Cook county, Illinois, have invented a new and useful Desk-Telephone, of

which the following is a specification, reference being had to the accompanying draw ings, illustrating same.

ur invention relates to telephones, and more particularly to that class of telephones? The leaf spring known as desk telephones.

The principal object of our invention is to provide an improved construct-ion in a desk telephone, as will be hereinafter described more in detail, this present invention being an improvement on our United States Letters Patent No. 911,866, issued February 9, 1909, on desk telephone.

In the accompanying drawings, Figure 1 is a Vertical cross-sectional view of the im-= proved telephone of this invention, with porj tions shown in elevation; Fig. 2 is a bottom; view of the circular plate and apparatusi thereon, used in the base of the telephone of Fig. 1; and Fig. 3 is an elevation of the guiding member for the spring-controlled, switch-hook-operating rod shown in Fig. 1.

Like characters refer to like parts in the,

11 extend through openings in the inner base several figures.

The telephone of this invention has a vertical standard 1 suitably secured at its lower end to an outer circular sheet-metal base portion 2, preferably by having its lower end cut away so as to form a rim therearound at 28, against which rim the upper end of the outer base 2 rests, and then formed outwardly to fit the interior of the upper end of the base portion 2 as shown. A transmitter 3 is carried by the upper end of the standard 1. Near the upper end of the standard 1 is pivoted a switch-hook 4 at 5 preferably as shown, the pivot 5 being on an inwardly extending lug 6 secured to the standard 1 preferably as shown. At the opening for the lug 6 the standard 1 is formed inwardly so as to permit the lug 6 to be riveted to the standard 1 and at the same time preserve the smooth exterior cylindrical surface of the standard.

An inner circular sheet-metal base 7 is fitted into the outer base 2 as shown, the inner base 7 having the guiding member 8 attached thereto. The guiding member 8 is provided with a pair of lugs or cars 10 10 at its upper end, adapted to fit into an open- 1 ing in the wall of the upper end of the stand- 1, on opposite sides of the switch-hook 4, to securely hold the inner base 7 in place. 9 is attached to the guiding member 8, is a apted to fit around the lug 6 as shown, and is to give spring pressure against the guiding member 8 to securely hold the cars 10 10 thereof in place in the opening in the wall of the standard 1. The guiding member 8 carries a pair ofcontact members 11 11 which serve as terminals for the pair of conductors leading down through the standard 1 from the transmitter 3.

The circular plate 12, carrying an induction coil 13, a distributing strip 14, and spring members 15, 16,- 17, 18, 19, and 20, preferably as shown, is mounted inside of the inner base 7 as shown, by a pair of spring catches 21 and 22; more fully de scribed in detail in our United States patent above mentioned. The contact members 11 7 and the circular plate 12, and engage the respective spring members 15 and 20. Spring member 17 carriesthe switch-hookoperating rod 23 preferably as shown, which rod extends up through openings in the circular plate 12 and the inner base7, and through the hollow standard 1 to the switchhook 4, the upper end of rod 23 entering a recess 29 in the switch-hook.

The rod 23 is encircled by a coil spring 24 which acts on the rod to raise the switchhook when the receiver is removed therefrom, the rod 23 at the same time controlling the switch contacts in the base of the telephone. When the receiver is hung upon the switch-hook in the usual manner, it acts against the coil spring 24 and lowers'the switch-hook, thereby controlling the switch plate unit may contacts in the base of the telephone in a patent above mentioned.

The lower end of the inner base 7 is closed.

b a plate 25 which is preferably held in place by the spring catches 21 and 22; as described more in detail in our United States patent above mentioned. .To remove the late 25 it is only necessary to press the ower end of the spring catch 21 outwardly, whereupon the plate 25 may be readily removed.

Between the lower ends of the circular base portions 2 and 7, is placed a strip of leather 26 therearound, serving as a cushion for the telephone. This strip of leather 26 is held in place by the lower edge of the inner base portion 7 being formed outwardly as shown at 27, so as to fit into a groove in the leather strip 26 clear around the base. It will be readily seen that when the inner base 7 is in place in the outer base 2, the leather cushion 26 is securely held in place.

From the above description it will be readily seen that the inner base 7 and the guiding member 8 are removable as a unit from the telephone, either apart from the circular plate l2 and rod 23, or with these portions, as desired; in the former case the plate 25 being first removed, then the circular plate 12 together with the rod 23 being removed, and finally the inner base 7 together with the guiding member 8 being removed. When the inner base 7 and the guiding member 8 are removed from the telephone, it is only necessary to push the ears 10 10 inwardly "a ainst the tension of the leaf spring 9, unti they are out of engagement with the wall of the standard 1, whereupon the inner base 7 and the guiding member 8 may be readily pulled from the standard and outer base 2.

This construction gives a desk telephone which is very durable and accessible at all of its working parts, and one which is very easy to assemble and disassemble.

Wedo not wish to limit this invention to all of theexact details of construction herein shown, as various modifications in same may be made without departing from the scope of the appended clalms.

' What we claim as our invention is:

1. A telephone of the character described comprising an outer base portion having a detail in our United States vertical standard carried thereby and secured thereto, an inner base portion adapted to be' laced into the outer base portion, a vertica member attached to the inner base portion and extending up into'the said stand-.

ard, and means for locking the said vertical member to the standard to hold the inner base portion in place, the said vertical member and inner base portion being removable as a unit from the standard and outer base portion.

2. A telephone of the character described comprising an outer base portion having a vertical standardcarried thereby and secured thereto, an inner base portion adapted to be placed into the outer base'portion, a vertical member attached to the inner base portion and extending up into the said standard, a receiver hook carried by the said standard, a pair of lugs on the said vertical member adapted to fit into an opening in the said standard on opposite sides of the receiver hook, and a spring member attached to the said vertical member and acting to force the said lugs into the opening in the said standard whereby the said vertical member and inner base portion are locked in position, the said vertical member and inner base portion bein removable as a unit from the said standar and outer base portion.

3. A. telephone of the character described comprising an outer base portion and a vertical standard carried thereby and secured thereto, an inner base portion adapted to fit into the outer base portion, a vertical member secured to the inner base ortion and extending up into the said stan ard, means for locking the said vertical member to the said standard whereby the inner base portion is held in place, a plate removably secured within the inner base portion and Tcarrying switch contact members, a receiver hook carried by the said standard, a rod extending up through the said standard into en agement with the receiver hook and a'dapteffor con trolling the said switch contact members, and a spring member acting on the said rod against any weight on the receiver hook whereby the latter is raised when empty, the said vertical member serving as a guide to properly guide the upper end of the said rod mto engagement with the receiver hook when the telephone is being assembled, the said.

vertical member and the inner base portion being removable as a unit from the said standard and outer base portion.

4. A telephone of the character described comprising an outer base portion having a vertical standard carried thereby, an inner base portion adapted to be placed into the outer base portion, a vertical niember at-- tached to the inner base portion and extending up into the said standard, means for locking the said vertical member to the standard to hold the inner base 'portion in semen an:

place the said vertical member and inner subscribe our names this 21st day of Deblase portion being removable as a unit 15m cember, 1908.

t 1e standard and outer base portion, an a I cushion member placed between the edges A 5 of the said base portions and removable with the inner base portion, the latter normally l Vitnesses:

holding the cushion member in place. FREDERICK R. PARKER,

As inventors of the foregoing we hereunto FRANK J. RYAN. 

